I've entered the cheats to get the cheat menu but nothing happened... i entered it right after the screen that says press start HELP
NNN---NNN---FF FFF----SSS--- --- --- ---
NNN N--NNN---FFF--- SSS--- --- --- ---
NNN-NNN--- FFF---SSS--SS--- --- --- ---
N NNN---FFF---- --SSS--- --- --- ---
NNN-NNN- --FFF---SSS--- --- --- ---

NNN--NNNN---FFF---- ----SS--SSS--- --- --- ---
NNN---NN N---FFF---SSS ---DID-IT-MY-S ELF--- --- -